沸过的水

Wipe away the liquid overflown from the side tube with a piece of filter paper and put the cap immediately. Remove the pycnometer from the water bath and clean off any material on the outside with a piece of filter paper, weigh the pycnometer accurately and calculate the weight of its content.

然后将比重瓶自水浴中取出，再用滤纸将比重瓶的外面擦净，精密称定，减去比重瓶的重量，求得供试品的重量后，将供试品倾去，洗净比重瓶，装满新沸过的冷水，再照上法测得同一温度时水的重量，按下式计算，即得。

Fill the glass cylinder of the Westphal balance with freshly boiled and cooled water to about 80% of the volume.

取20°C时相对密度为1的韦氏比重秤，用新沸过的冷水将所附玻璃圆筒装至八分满，置20°C（或各品种项下规定的温度）的水浴中，挑动玻璃圆筒内的水，调节温度至20°C（或各品种项下规定的温度

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。